Typewriting machine



G. G. GOING TYPEWRITING MACHINE Sept. 11, 1934.

Filed Feb. 15, 1935 s Shets-Sheet 1 INVENTOR Sept. 11, 1934. GQINGI1,973,311

' TYPEWRITING MACHINE Filed Feb. 15, 1955 s sheets-sheet 2 II) II fill?IIIIII IIIII WlTNESSES INVENTOR I BY.

ATTORNEY Sept. 11, 1934. GOING TYPEWRITING MACHINE Filed Feb. 15, 1933 3Sheets-Sheet 3 INVENTOR W KQEZQ 77.

ATTORNEY Patented Sept. 11, 1934 UNITED STATES TYPEWRITING MACHINEGeorge G. Going, Glenbrook, Conn., a'ssignor to Remington Rand Inc., NewYork, N. Y., a corporation of Delaware Application February 15, 1933,Serial No. 656,826

18 Claims. (Cl. 197-143) My invention relates to typewriting and likemachines and more particularly to devices that act on a work sheet inthe machine.

One of the main objects of my invention is to provide highly effectivemeans for damping that part of the work sheet which extends above theplaten after it has advanced beyond the printing line, and whichordinarily accentuates any noise produced by a hammer blow of a type baragainst the platen.

A further object of my invention is to utilize said damping means forother purposes such as for effectively feeding and guiding a work sheetand for indicating the approach of the bottom edge of the work sheet tothe printing line etc.

A still further object of my invention is to so mount said devices, orsome of them, that they may be moved back out of effective position as aunit, or may be readily detached from the machine when desired.

To the above and other ends which will hereinafter appear my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andpointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicatecorresponding parts in the different views:-

Fig. 1 is an enlarged, detail fragmentary, fore and aft sectional viewwith parts broken away of sufficient number of parts of a typewritingmachine to show my invention in its embodiment therein.

Fig. 2 is an enlarged, detail, perspective view of parts of thesupporting means for the front paper table.

Fig. 3 is an enlarged, fragmentary, detail, sectional view taken on line33 of Fig. 1 and looking in the direction of the arrows at said line.

Fig. 4 is a detail, fragmentary, horizontal, sectional view of a part ofthe front paper table supporting means, the section taken on the line4--4 of Fig. 1 and looking in the direction'of the arrows at said line.I

Fig. 5 is a skeletonized end'view of parts represented in Fig. 1 butshowing a different disposition of the parts. Fig. 6 is a detail,diagrammatic, side view with parts in section, showing the manner inwhich the devices coact with a work sheet in the machine.

Fig. 'l is a detail, front view of the construction disclosed in Fig. l,with parts broken away.

Fig. 8 is an enlarged, detail, fragmentary, sectional view taken on theline 88 of Fig. 'l and looking in thedirection of the arrows at saidline.

I have found in practice that the noise which is ordinarily produced bythe hammer blows of 60. the type bars against the platen are greatlyaccentuated by that portion of the paper in the machine which hasadvanced beyond the printing line and has left the platen, and that thegreater the extent of this portion of the work sheet the greater will bethe noise produced. This is found to be true even in the event that asubstantially noiseless platen is provided. The noise accentuated bythat portion of the work sheet referred to above is to be distinguishedfrom that which is sometimes produced when the paper is bellied on theplaten at or near the point of impact of the type bars and forms an airpocket beneath the work sheet.

I have found by experiment that if that portion of the work sheet whichhas advanced beyond the platen is eifectively dampened, then the noiseordinarily produced will be eliminated or reduced to such an extent asto be hardly noticeable when a substantially noiseless platen isemployed. 8

I have shown my invention embodied, in the present instance, in atypewriting machine of the .type of the L. C. Smith machine in which thetype basket receives a case shifting movement. However, my invention maybe employed in various 8 types of typewriting and like machinesemploying a cylindrical platen.

The carriage which may be of any suitable construction and in thepresent instance comprises end plates 10 and 11 connected by cross bars12 and 13, the former bearing on balls 14 that travel in a race-way 15.The cross bar 13 has a raceway 16 that receives bearing balls 17 thatlikewise are received in the oppositely disposed raceway in a fixedguide bar or rail 18. The carriage is thus mounted to travel from sideto side of the machine over a top plate 19 and supports a cylindricalplaten 20 preferably of a substantially noiseless character. Type bars(not shown) receive an upwardly and rearwardly swinging movement andstrike against the front face of the platen, the printing line beingindicated by the dot and dash line a in Fig. 1.

A paper table 21 is mounted in the rear or introductory side of theplaten to direct a work sheet 22 to the main feed rollers 23 and thepaper apron 24. Forward feed rollers 25 also coact with the platen orthe work sheet thereon. The usual or any suitable means may be employedfor shifting the feed rollers'23 and 25 and the paper apron 24 from thenormal effective position shown in Fig. l to the releasingposition shownin Fig. 5. Since these features constitute no part of my presentinvention further description thereof is deemed unnecessary.

As the work sheet 22 is fed up beyond the printing line a it passesbeneath a spring pressed memher or paper feed roller 26 that extendsthroughout the length of the platen and bears against the platen abovethe printing line.

From the broader aspects of my invention it is immaterial whether themember 26 is in the nature of a bar or is in the nature of a feed rollerand how said member is mounted. However, the location of this memberrelatively to other parts of the structure and the function attainedthere- I by is an important factor, as will hereinafter more clearlyappear.

In the presentinstance the feed roller 26 is fixed on a hollow shaft orspindle 27 which rotates freely on a fixed spindle 28 by which theroller is supported. As shown in Fig. 3 each end of the spindle 28 isreduced at 29 where it is received in a hub 30 riveted to and projectinginwardly from the'upper end of an upright arm 31, a set screw 29 holdingthe spindle 28 against rotation. The lower end of each arm 31 is pivotedat 32 to a bracket33 secured by a screw 34 to one of the end plates 10or 11 of the carriage. A relatively heavy contractile spring 35 isconnected at one end to a pin 36-on one of the arms 31, the other end ofthe spring being anchored to a pin 37 on the end plate 10 of thecarriage. In this manner spring pressure is applied to the feed roller26 to cause it to bear against the platen or a work sheet thereon.

I have provided means for castingofi or releasing the feed roller 26independently of the feed rollers 23 and 25 and to maintain said roller26 in its released position. Said means comprises an angular lever 38,38" which is pivoted at one end at 39, to the end plate 10 ofthecarriage, the. other end of said lever terminating in a finger piece 40as shown in Fig. 5. At the intersection of the two arms 38, 38" of thelever it is pivoted, at 41, to one end of a toggle link 42, the otherend of said link being pivoted at 43 to one of the roller carrying arms31. It will be seen that the lever 38, 38* constitutes the secondelement of the toggle, and that a movement of said lever from the Fig. 1to the Fig. 5 position results in bringing thetoggle member 42, 38' to astraight line or dead centered position to holdthe feed roller 26 in itsreleased position until the finger piece 40 is shifted rearward to breakthe toggle.

In order to limit the movement of the toggle member to the straight lineposition shown in Fig. 5 I have provided the lever 38, 38' with anoff-set stop projection 44 which, when the parts are in the Fig. 5position, contacts with the link 42 and limits the movements of theparts under a forward pull on the finger piece 40.

. From the broader aspects of my invention any suitable means which willeffectivelydampen that portion of the work sheet in the machine whichextends above the feed roller 26 will meet the object of my invention.In the present instance I provide such'a construction which will now bedescribed.

A front paper table 45 is mounted above the platen near the frontdelivery side thereof withits lower edge adjacent to the platen. Thispaper table is so positioned that the feed roller 26 is immediately infront of and adjacent to the lower edge thereof for purposes which willpresently spring pressed forward and are mounted to move a limitedextent fore and aft of the machine. Referring more particularly to Fig.2 it will be seen that each end of the bar 46 is provided with twooppositely disposed lugs 48 that are received in correspondingly spacedopenings 49 in the companion slide 47 to prevent the cross bar fromturning relatively thereto. Each end of the cross bar is tapped at 50 toreceive the threaded end of a headed screw 51 (Fig. 4) to firmly thoughdetachably unite the cross bar and the two slides 47.

Referring more particularly to Fig. 4 it will be seen that each slide 47has riveted thereto two headed pins 52 that are received in slots 53provided in and extending longitudinally of the companion supporting arm54. A contractile spring 55' is connected atone end 56 to the associatedslide 4'7 and is anchored at the other end 5'7 to the companionsupporting arm 54. The force of each spring 55 is exerted to move thecompanion slide 4'7 forward "to the limit of its movement in thatdirection, as determined by the pins 52 engaging the left hand ends ofthe slots 53, as the parts appear in Fig. 4. The purpose of thisarrangement is to permit the paper table 45 to receive a slight rearwardmovement against the force of the springs 55 in the event that thestiffness or thickness of the work sheet or sheets tends to prevent thefeed roller from pressing such sheet or sheets against the platen. Inother words it will be understood that if the paper table were rigidlymounted, the employment of a work sheet or sheets of unusual stiffnessor thickness might hold the feed roller against the force of its springout of cooperative relation with the platen, so that the sheets couldnot be fed forward after the lower ends .thereof left the feed rollers25. However,by mounting the paper table 45 for rearward movement againstthe force of the springs 55, which are weaker than the spring 35, thenin the event of the use of a thicker or stiffer work sheet than thatordinarily employed, the paper table 45 will give rearwardly and enablethe feed roller 26 to press the work sheet against the platen.

In order to provide-a support and damper for that portion of a worksheet which may extend upward beyond the paper table 45 I have provideda so-called extension which is in the nature .of a

flat bar 58. This bar or extension is so mounted on the rear side of thepaper table 45 that the extension may be shifted from its full lineposition for use, shown in Fig. '7, to the position of none use shown indotted lines in said figure, and ma be retained indefinitely in eitherof said positions, as will now be described.

The bar 58 is slotted longitudinally-M59 to receive the stem of a headedpin. 60 .that'projects from the rear side of the papertable 45. Thisconnection affords a pivotal movement-of the bar 58 from an uprightposition at right angles to the paper table 45 to a position paralleltherewith and in the rear thereof. The connection also enables the barto slide lengthwise a distance corresponding to the length of the slot59 from a position where it extends to a considerable distance beyond Inorder to hold the bar 58 against accidental displacement from itsupright effective position suitable means are provided for holding itinsuch position. In the present instance such means comprise a. springdetent 61 secured at one end, at 61, to the rear side of the paper tablenear the top edge thereof. This detent, as shown, is provided with acone-like engaging projection 62 that is received in a correspondingrecess or indentation 63 in the bar 58 when the latter is swung toeffective position shown in full lines in Fig. 7. The detent thus locksthe bar in the effecti position, but suflicient force exerted on thebar? rom left to right is effective to overcome the resis ance of thedetent and enable it to be swung downIJio ineffective position.

' From a consideration of Fig. 6 it will be understood that the heightof the paper table 45 and extension 58 is such that they'will contactwith and support a work sheet 22 of any of the standard lengthsordinarily employed. It will be seen, moreover, from this view that thework sheet intermediate the feed rollers 25 and. 26 is held by said feedrollers firmly against the platen,

' whereas that portion of the work sheet that exindicated in Fig. 7 inwhich the index numeraltends beyond the platen is in contact at alltimes from the point where it leaves the platen with either the table orsaid table and its extension 58, to effectively dampen its vibrationsand preventor reduce to a minimum the noise that is ordinarilyaccentuated by this portion of the work sheet.

I have found, moreover, that by causing that portion of the work sheetin the machine which extends above the printing line to receive a moreor less abrupt bend, as at the line where the feed roller 26 coactstherewith, this in itself acts'to dissipate, reduce or prevent thevibrations of the sheet and the consequent noise which ordinarily occurswhen that portion of the work sheet is free from such bend.

If desired the front face of the bar 58 may be provided with suitableindices with which the leading end of the work sheet may registersuccessively and thus constitute a page end indicator, as well as adamper, for the work sheet. This is 13" on the bar 58, and theindicating line at the bottom of said numeral, indicate to the operatorthat the bottom edge of a legal cap or thirteen inch sheet is close tothe printing line when the leading end of saidsheet registers with saidindex numeral.

I prefer to construct and pivotally mount the supporting arms 54 in thefollowing manner in order that said arms, the slides 4'7, the papertable 45 and its extension 58 may be readily swung back as a single unitto an ineffective position, and may when desired be readily removed as asingle unit from the machine, as will now be described.

' Each supporting arm 54 is pivoted in the rear of the platen to abracket arm 64, as indicated at 65. Each bracket 64 is secured by headedclamping screws 66 to bracket arms 6'1 by which a column stop bar 68 issecured to the carriage. The stem of each screw 66 passes through a foreand aft elongated slot 69 in the foot piece 64* of the companion bracketand affords a limited fore and aft adjustment of said bracket and theparts carried thereby, and also provides for the ready removal of suchparts as a single unit, when desired. Each supporting arm 54 extendsrearward and downward from its pivot and terminates in a laterallyprojecting stop lug 70 that coacts with the companion bracket 67 tolimit the pivotal movement of the associated arm 54 .and the partscarried thereby to the effective, Fig. 1, position. Each stop lug 70also coacts with the upright arm of the companion bracket 6'7 to limitthe pivotal movement of the arms 54 and the parts carried thereby in theopposite direction.

The release of the feed rollers 23 and 25 and the paper apron 24 may becontrolled from the handle 71 by any suitable means.

From the foregoing description it will be seen that the paper table 45and its extension 58 constitute means for supporting a work sheet as itleaves the platen above the printing line and for substantially the fulllength thereof beyond said point and that the feed roller 26 constitutesmeans for assuring a contact between said sheet and supporting meansthroughout the length of the latter, thus causing the supporting meansto operate in the nature of a damper to reduce or prevent the noise thatordinarily is accentuated by that portion-of the work sheet in themachine which extends beyond and above the printing line.

It also will be seen that the feed roller 26 bears against the platen,or the work sheet thereon, at the point where the work sheet leaves theplaten and is arranged close to the lower end of the supporting meansand in the bight between the platten and supporting means. acts with theplaten and supporting means to create a more or less abrupt bend in thesheet and compel it to contact with the platen and supporting means atsuch place and insures the sheet contacting with the supporting meansthroughout the length of the latter.

While the means herein described have been found to be highly effectiveto substantially eliminate the noises ordinarily highly accentuated orproducedby a work sheet in the machine, it

should be understood that from the broader aspects of my invention manychanges may be made in the construction, and parts thereof may beemployed without others, without departing from my invention as it isdefined in the accompanying claims.

What I claim as new and desire to secure by Letters Patent is:

1. The combination of a cylindrical substantially noiseless platen,means for immediately A supporting a work sheet as it leaves the platenabove the printing line and for substantially the full length of saidsheet beyond said point, and means for assuring a contact between saidsheet and said support throughout the length of the latter, whereby saidsupport will operate in the nature of a damper on the work sheet toreduce .or prevent the noise that ordinarily is accentuated by thatportion of the work sheet in the machine which extends above theprinting line.

2. The combination of a cylindrical platen, a work sheet support nearthe front of and above the platen and having its lower end adjacent tothe platen, a spring, means for mounting said support for bodilyrearward sliding movement A from normal position against the force ofsaid spring, and a feed roller which coacts with said platen directly infront of and adjacent to the lower end of said support.

3. The combination of a cylindrical platen, a

work sheet support near the front of and above The roller thus 00- 4.The combination of a cylindrical platen, arms pivoted in the rear of theplaten, slides mounted .on said arms, springs which connect said armsand slides and offer a spring resistance 5 to the backward movement ofsaid slides from normal position, a paper table carried by said slidesand having its lower edge adjacent to the platen, and a spring pressedmember mounted independently of said paper table and located in front ofthe lower edge thereof, said member coacting, with a work sheet to pressit against the platen and causeit to bear against the paper table as thework sheet leaves the platen.

5. The combination of a cylindrical platen, arms pivoted in the rear ofthe platen, slides mounted on said arms, springs which connect said armsand slides and offer a spring resistance to the backward movement ofsaid slides from normal position, a paper table carried by said slidesand having its lower edge adjacent to the platen, a spring pressed feedroller mounted independently of said paper table and located in front ofthe lower edge thereof, said feed-roller coacting with a work sheet topress it against the platen and cause it to bear against the paper tableas the work sheet leaves the platen, and hand actuated means operable atwill for releasing said feed roller. p

6. The combination of a cylindrical platen, arms pivoted in the rear ofthe platen, slides mounted on said arms, springs which connect said armsand slides and offer a spring resistance to the backward movement ofsaid slides fromnormal position, a paper table carried by said slidesand having its lower edge adjacent to the platen, a spring pressedmember mounted independently of said paper table and located in front ofthelower edge thereof, said member coacting with a work sheet to pressit against 4 the platen and cause it to bear against the paper table asthe work sheet leaves the platen, and means for readily detaching thearms, slides and paper table from the carriage as a single unit.

7. The combination of a cylindrical platen,

5 arms pivoted in the rear of the platen, slides mounted on said arms,springs which connect j said arms and slides and offer a springresistance.

to the backward movement of said slides from normal position, a papertable carried by said slides and having its lower edge adjacent to theplaten, a spring pressed member mounted independently of said papertable and located in front of the lower edge thereof, said membercoacting with a work sheet to press it against the platen and cause it'to bear against the paper table as the work sheet leaves the platen,and an extension carried by said paper table and shiftably mountedthereon from an upright position of use to an ineffective positionparallel with 6) the paper table.

8. The combination of a carriage, a cylindrical platen carried thereby,arms extending forward from the carriage above the platen near the endsthereof, spring pressed slides carried by said arms,

a cross bar intermediate said slides and detachably connected therewithbut fixed against rotation thereon, and a paper table fixed to saidcross bar and extending at its lower edge adjacent to the platen nearthe frontthereof.

9. The combination of a carriage, a cylindrical platen carried thereby,arms extending forward from the carriage above the platen near the endsthereof, spring pressed slides carried by said arms, a, cross barintermediate said slides and-detachably connected therewith but fixedagainst rotaplaten near the front thereof, an extension mounttionthereon, a paper table fixed to said cross bar and extending at itslower edge adjacent to the platen near the front thereof, and anextension mounted on said paper table for movement thereon from aneffective upright position of use to an-etfective position parallel withthe paper table. 10. The combination of a carriage, a cylindrical platencarried thereby, arms extending forward from the carriage above theplaten near the ends thereof, spring pressed slides carried by saidarms, a cross bar intermediate said slides and detachably connectedtherewithbut fixed, against rotation thereon, a paper table fixed tosaid cross bar and extending at its lower edge adjacent to the ed onsaid paper table for movement thereon from an effective upright positionof use to an ineffective position parallel with the paper table, and afeed roller arranged in front of the lower edge .of said paper table andbearing against the platen adjacent to said paper table. 11. In aconstruction for damping that part of a work sheet which extends abovethe platen after it has advanced beyond the printing line in order toreduce to a minimum or eliminate the noise that ordinarily isaccentuated by. the paper during the hammer blows of, the type barsagainst the platen, the combination of a cylindrical substantiallynoiseless platen, means for supporting a work sheet as it leaves theplaten above the printing line and for substantially the full length ofthe sheet beyond said point, and a member arranged above the printingline and bearing against a work sheet in the machine throughout thewidth thereof at the point where the sheet leaves the platen and whereit immediately coacts with said support, thereby maintaining the sheetin contact with the platen and support at said point. 12. In aconstruction for damping'that part of a work sheet which extends abovethe platen after it has advanced beyond the printing line in order toreduce to a or eliminate the noise that ordinarily is accentuated by thepaper during the hammer blows of the type bars against the platen, thecombination of a cylindrical substantially, noiseless platen, means forsupporting a work sheet as it leaves the platen above the printing lineand for substantially the full length of the sheet beyond said point,and a feed roller that extends throughout the length of the platen andbears against the latter above the printing line and at the bightbetween the platen and said support, said feed roller coacting with awork sheet in the machine throughout the width thereof and coacting withthe platen and said support to create an abrupt bend in the work sheetat the point where the sheet passes from the platen where it immediatelycoacts with said support, thereby maintaining contactive engage- 5 mentof the work sheet with the platen and support at said point andproviding against the. formation of a pocket between the platen and worksheet. V

13. In a construction for damping that part of a work sheet whichextends above the platen after it has advanced beyond the printing linein order to reduce to a minimum or eliminate the noise that ordinarilyis accentuated by the rolle'i that extends throughout the length of theplaten and bears against the latter above the printing line and atthe'bight between the platen and said support, said reed roller coactingwith a work sheet in the machine throughout the width thereof andcoacting with the platen and said support to create an abrupt bend inthe work sheet at the point where the sheet passes from the platenimmediately to said support,

thereby maintaining contactive engagement of the work sheet with theplaten and support at said point and provide against the formation of apocket between the platen and worksheet, and

hand-controlled means operable at will for shirting said feedroller-forward to and for maintaining it. in an inefiective position.

14. In a construction for damping that part of a work sheet whichextends above the platen after it has advanced beyond the printing linein order to reduce to a minimum or eliminate the noise that ordinarilyis accentuated by the paper during the hammer blows of the type barsagainst the .platen,=the combination of a'cylindricalsubstantially'noiseless platen, a paper table at the front delivery sideof the platen, an upwardly directed extension'on said papertable,

the combined height of the paper table 'and extension being such as tosupport and dampen the work sheet substantially throughout the ,lengththereof beyond the point where it leaves the platen, and means adjacentto the lower end or said paper table fol-controlling a work sheet at thepoint where'it leaves the platen and immediately coacts with said papertable to provide against the formation ot a pocket between the platenand work sheet.

15. In a construction for damping that part of a worksheet which extendsabove the platen after it has advanced beyond the printing line 'inordcrto reduce to a minimum or eliminate the noise that ordinarily'isaccentuated by the paper during the hammer blows of the type barsagainst the platen, the combination of a cylin drical substantiallynoiseless platen, a paper table at the frontdelivery side of the platen,an extension for'said table, means for assuring a contact between a worksheet and said paper table and extension where the work sheet leaves theplaten, means for connecting said extension to the paper table formovement from an upright, position thereon to a position behind andpar-' allel withsaid paper table, and .a detent for holding saidextension in its upright position.

16. In a construction fordam'ping that part of a work sheetwhichsextends above the platen after it has advanced beyond the printingline in order to reduce to a minimum or eliminate the noise thatordinarily is accentuated'by'the paper during the hammer blows or thetype bars againstthe platen, the combination of. a cylin-I ncvasrrsubstantially noiseless platen, a paper table,-an extension for saidpaper table, the combined height of the paper table and extension beingsuch as to support and dampen the work sheet substantially throughoutthe length thereof beyond the point where it leaves the platen, meansfor assuring contact between awork sheet andthe platen and paper table,and a pivotal and sliding connection between said tables-mi extension,whereby the latter may receive a pivotal movement into parallelism withthe table and may then receive .a sliding movement into compact positionbehind-the paper table. a

1'1. Ina construction for damping that part of a work sheet whichextends above the platen after it has advanced beyond the printing linein order to reduce to a minimum or eliminate the noisethat.ordinarily'is accentuated by the Paper during the hammer blows of thetype bar's against the platen, the combination or a carriage, acylindrical substantially noiseless platen carried thereby, bracketsdetachably and adjustably mounted on the carriage in the rear of the.platen, arms pivotaliy connected to said brackets and extending forwardabove the platen near the ends thereof, a paper table carried" by saidarms and extending at its lower edge near the platen of a work sheetwhich, extends above the platen after it has advanced beyond theprinting line in order to reduce to a minimum or eliminate the noisethat ordinarily is accentuated by the paper during the hammer blows ofthe type bars against the platen, the combination of a c'ylindricalsubstantially noiseless platen, a paper table at the front delivery sideof the platen, an extension for said table, means for assuring a contactbetween a work sheet and said paper table and extension when the worksheet leaves the platen, the combined height of the paper table andextension being such as to support and dampen the work sheetsubstantially throughout the length thereof. beyond the point where itleaves the platen,- means forconnecting said extension to the papertable for movement from an upright position thereon to a position behindand parallel with said paper table, and a detent for holding saidextension in its upright position.

opener: G. some.

